In plants, the neighbouring cells are connected with one another by__________??
A. Plasmodesmata
B. Cell walls
C. Vacuoles
D. Both ‘A’
Category: Biology Mcqs
A chemical substance that reacts with enzyme but is not transformed into product and thus blocking active site is called__________??
A. Substrate
B. Co-factor
C. Inhibitor
D. Promotor
The rate of reaction is directly proportional to the concentration of an enzyme which statement is incorrect in this respect_________________??
A. Increase in enzyme molecule increases the available active sites.
B. This relation is for unlimited time period with unlimited enzyme concentration
C. If the concentration is doubled the rate will become two fold.
D. None of these.
All of the following are coelomates except:____________??
A. Deuterosomes
B. Proterosomes
C. Hemichordates
D. Aschelminthes
C6H12O6 6O2 ? 6CO2 6H20 ENERGY represents:____________??
A. Photosynthesis
B. Aerobic respiration
C. Anaerobic respiration
D. Respiration
Who discovered the bacteria causing tuberculosis and also developed various techniques of media preparation and maintenance of pure culture_____________??
A. Robert Koch
B. Louis Pasteur
C. Alexander Fleming
D. Leeuwenhoek
Production of genetically identical copies of organisms/cells by asexula reproduction is called ??
A. Mitosis
B. Replication
C. Cloning
D. Biological control
Of the following which one is not the characteristic of dinoflagellates??
A. Most of them are unicellular
B. They have blooms
C. Their cells are often covered with shells of interlocking cellulose plates impregnated with calcium
D. None of these
Sex pill is formed in which of the following processes??
A. Binary fission
B. Mitosis
C. Sexual reproduction
D. Conjugation
First Actions spectrum was obtained by using__________??
A. Algae
B. Fungi
C. Bacteria
D. Spirogyra
